50 years ago #OTD at 16:09 UTC #Soyuz 19 and the final #Apollo spacecraft docked in orbit in the Apollo–Soyuz Test Project or Экспериментальный полёт «Союз»–«Аполлон» (the Americans and Soviets never agreed on which s/c comes first): https://www.nasa.gov/apollo-soyuz-test-project/ = various NASA materials, https://historycollection.jsc.nasa.gov/JSCHistoryPortal/history/astp.htm = many links, https://www.nasa.gov/wp-content/uploads/2023/04/sp-4209.pdf = a biiiig book, https://www.facebook.com/AstroDrewMorgan/posts/pfbid0wcN12LcAfRYYTmiWS71GQ47P42jukXVhd2QWA7eBzgg1wbdZAKq8LXVGTC9o7tKtl and https://www.facebook.com/ralf.heckel1/posts/pfbid02jcFp85PRy2UBUs4JVhPQcBnmddC8sQbPL3Vx26XoFMvbbsToNJmpLMDrRfce98HPl and https://www.facebook.com/groups/176051159106442/posts/24331420949809459 and https://www.facebook.com/groups/48800622850/posts/10162318303047851 = more visuals, https://www.youtube.com/live/Mu7iEyaOmDM = an online event, https://arstechnica.com/space/2025/07/not-that-into-peace-doves-the-apollo-soyuz-patch-nasa-rejected/ and https://www.spacerockethistory.com/2025/02/space-rocket-history-457-apollo-soyuz-test-project-soviet-concerns-with-apollo/ and http://www.collectspace.com/news/news-071425a-apollo-soyuz-test-project-astp-official-flight-kit-ofk-apk.html and https://www.nytimes.com/2025/07/14/science/apollo-soyuz-test-project-1975-anniversary.html?smid=bs-share = articles and https://scicomm.xyz/@Nick_Stevens_graphics@mastodon.art/114858897568849751 = a contemporary cartoon.
#Sunset, #sunspots - see #Bochum, Germany: see https://bsky.app/profile/cosmos4u.bsky.social/post/3luba4dnark2t for two earlier timesteps.
JWST Spectroscopy of (142) Polana - Connection to NEAs (101955) Bennu and (162173) Ryugu: #Bennu and #Ryugu are part of the Polana family: #asteroids
A previously unknown regular satellite of #Uranus has been detected in a series of images obtained by the Near-Infrared Camera (NIRCam) onboard the James Webb Space Telescope on 2025 Feb. 2: http://www.cbat.eps.harvard.edu/iau/cbet/005500/CBET005593.txt -> https://science.nasa.gov/blogs/webb/2025/08/19/new-moon-discovered-orbiting-uranus-using-nasas-webb-telescope/ - the object is located at a projected radial distance of 56250 /- 250 km from Uranus' center in the planet's equatorial plane, initial astrometry is consistent with the moon orbiting on a nearly circular orbit with an orbital period 0.402 days, and the observed IR flux from the object indicates a radius of 4 - 5 km, placing it well below the detection threshold of earlier images from Voyager and the Hubble Space Telescope.
Benchmark #BrownDwarfs – a blue M2 T5 wide binary and a probable young [M4 M4] [T7 T8] hierarchical quadruple: https://academic.oup.com/mnras/article/542/2/656/8155088?login=false -> Rare quadruple star system could unlock mystery of brown dwarfs: https://ras.ac.uk/news-and-press/research-highlights/rare-quadruple-star-system-could-unlock-mystery-brown-dwarfs
Jet-mode Feedback in NGC 5972 - Insights from Resolved MUSE, GMRT, and VLA Observations: #Voorwerp Galaxy: https://aasnova.org/2025/07/18/written-in-the-gas-jet-feedback-in-a-voorwerp-galaxy/
Are the ONC, Pleiades, and Hyades snapshots of the same embedded cluster? #StarClusters – all with the same origin? https://www.uni-bonn.de/en/news/134-2025 - the trio of star clusters Orion Nebula, Pleiades and Hyades do not just randomly lie in the same region of space.
How many stars form in compact clusters in the local Milky Way? #StarFormation: https://bsky.app/profile/emily.space/post/3lwqiwtcfyc2x (thread)
All the #DZA - #Hasinger at the end of #ag2025goerlitz ... unfortunately the idiotic cellphone OS decided that this of all slides deserved only low resolution. :-(